it was very, very loud. like boom shot. he fell down on the ground. everyone looked and said run for safety. >> police say pardus's mother had just had spinal surgery at johns hopkins and he allegedly became upset when he learned she was paralyzed following the operation. they say that is when he shot dr. david cohen and then killed his mother before turning the gun on himself. dr. cohen is still recovering in the hospital tonight. since yesterday's deadly shooting, we've taken a closer look at the security inside our local medical centers. at howard university hospital, for example, there are no metal detectors but 33 security guardsman the doors and patrol the hallways. last summer, the hospital did away with uniformed officers carrying guns. now security carry batons. they show hospital violence is on the rise, so security officers focus on training to combat the problem. well, you know, sometimes you just got to stick it to the man. they told a popular beer garden in arlington ta make some major changes in how they do business.